html,
body {
    color: #fff;
    box-sizing: border-box;
}

a {
    text-decoration: none;
    color: #fff;
}

.container {
    clear: both;
    width: 900px;
    height: 600px;
    background: url('../images/bg.png') no-repeat center;
    margin: 0 auto;
    > .controls {
        float: left;
        width: 95%;
        height: 60px;
        background: #354771;
        margin-top: 20px;
        margin-left: 20px;
        overflow: hidden;
        > .state {
            display: inline-block;
            width: 50%;
            height: 100%;
            float: left;
            clear: both;
            > li {
                list-style: none;
                float: left;
                width: 80px;
                height: 40px;
                text-align: left;
                position: relative;
                > img {
                    width: 20px;
                    height: 20px;
                    vertical-align: middle;
                    margin: -2px 0 0 8px;
                }
            }
        }
        > span {
            font-size: 12px;
            float: left;
            margin-top: 12px;
            width: 200px;
            height: 24px;
            border: 1px solid #ccc;
            padding-left: 10px;
            padding-top: 10px;
            > b {
                margin-right: 15px;
                float: right;
                display: inline-block;
                width: 7px;
                height: 12px;
                background: url("../images/arrow.png") no-repeat;
                background-size: contain;
            }
        }
        > a {
            float: left;
            margin-top: 20px;
            text-align: center;
            width: 50px;
            height: 50px;
        }
        > i {
            float: left;
            width: 1px;
            height: 60px;
            background-color: #4b5176;
        }
        > .target {
            margin-left: 70px;
        }
    }
    > .opeartion {
        width: 95%;
        height: 550px;
        background: url("../images/line.png") no-repeat top center;
        background-size: 855px 500px;
        clear: both;
        margin: 0 auto;
        position: relative;
        > ul {
            position: absolute;
            top: 100px;
            left: 80px;
            > li {
                list-style: none;
                margin-right: 10px;
                float: left;
                width: 20px;
                height: 20px;
                border-radius: 50%;
                border: 1px solid #c4c4c4;
            }
        }
        > ol {
            position: absolute;
            top: 210px;
            left: 90px;
            > li {
                width: 80%;
            }
        }
    }
}

.clearfix {
    content: "";
    display: block;
    height: 0;
    line-height: 0;
    visibility: hidden;
    clear: both;
}
